A bi-convex lens of focal length 20 cm is placed at a distance l = 6 cm from a plane mirror. If the medium between mirror and lens is water

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A bi-convex lens of focal length 20 cm is placed at a distance l = 6 cm from a plane mirror. If the medium between mirror and lens is water, find the equivalent focal length of the system.
09
Sep
A bi-convex lens of focal length 20 cm is placed at a distance l = 6 cm from a plane mirror. If the medium between mirror and lens is water, find the equivalent focal length of the system. A bi-convex lens of focal length 20 cm is placed at a distance l = 6 cm [...]
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